<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      switch (50) {
        case 100: // else if
          console.log("num 100");
          break;
        case 200: // else if
          console.log("num 200");
          break;
        default: // else
          console.log("num is not match");
      }
    </script>
  </body>
</html>
